Bass Drum Lifter Compact Folding Mechanism
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Solution Overview
Problem
Existing bass drum lifters fail to fold compactly due to their design, which results in increased vertical and front-rear dimensions, making them difficult to store and carry.
Innovation Solution
A bass drum lifter with a drum connection member and a pedal connection member that includes a lift portion, connected by a shaft arranged near the shell and batter head, allowing the pedal connection member to rotate between a storage and use position, with a long screw positioned to reduce the vertical dimension and enable compact folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the base is placed in the storage position by rotating around the shaft, then the bass drum lifter can be stored attached to the bass drum, but the vertical dimension is not significantly reduced making it impossible to fold compactly
Solution Approach 1:
The patent changes the rotation axis from a horizontal shaft to a vertical axis positioned near the shell and batter head. This dimensional change allows the pedal connection member to fold upward along the shell rather than rotating horizontally, significantly reducing the vertical dimension when stored and enabling compact folding while maintaining ease of operation.
2Device complexity
If the hinge shaft is arranged in a rear position away from the bass drum, then the connection is simplified, but the front-rear dimension of the base becomes relatively long preventing compact folding
Solution Approach 1:
The patent positions the rotation axis locally near the shell and batter head rather than in a rear position. This localized positioning reduces the front-rear dimension of the base by minimizing the distance between the rotation point and the lift portion, enabling compact folding while maintaining connection simplicity through the direct rotational joint.
3Reliability
If the pedal connection member is made long to reach from the pedal device to the bass drum, then the lifting function is achieved, but the vertical dimension increases making storage difficult
Solution Approach 1:
The patent makes the pedal connection member dynamically foldable rather than fixed. By positioning the rotation axis near the shell and allowing the pedal connection member to rotate between a use position (extending downward to lift the bass drum) and a storage position (folding upward along the shell), the system achieves reliable lifting function while minimizing vertical dimension during storage.
Data Source
AI summary
A bass drum lifter is provided with a drum connection member, a pedal connection member including a lift portion, and a long screw for rotationally connecting the pedal connection member and the drum connection member to each other. The pedal connection member is rotational around the axis of the long screw between a storage position in the vicinity of a shell of a bass drum and a use position at which the bass drum is lifted up by the lift portion. The long screw is arranged in the vicinity of the shell and in the vicinity of the batter head.